Automatic train-stopping apparatus.



H.. H. KHOUBESSERIAN- AUTOMATIC TRAIN STOPPING APPARATUS.

APPLICATION man Au'e.30. 19.15.

1,268,727. Patented June 4,1918.

3 SHEETS-SHEET 1.

-. no i J Q h muwtoz H. H. KHOUBESSERIAN.

AUTOMATIC TRAIN STOPPING APPARATUS.

APPLICATION H'LED AUG.30. 1916.

1,268,727.. Patented June 4, 191 s 3 SHEETSSHEET 2- flqjap E haubesswmbm/ I H. H. KHOUBESSERIAN. AUTOMATIC TRAIN STOPPING APPARATUS. APPLICATION m0 AUG-30, 1916.

1,268,727. Patented June 4,191&

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Wakbma HLAGOIE' H. KI-IOUBESSERIAN, 0F BOSTOLLMASSACHUSETTS.

AUTOMATIC TRAIN-STOPPING APPARATUS..

Specification of Letters Patent.

Patented June a, mic;

Application filed August 30, 1916. Serial No. 117,752.

To all whom it may concern: I

Be it known that I, HAGOP H. KHoUBns- SERIAN, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Automatic Train-Stopping Apparatus, of which the following is a specification.

This invention relates to improvements in automatic train stopping apparatus and ha particular application to a train controlled stopping mechanism.

In carrying out the present invention, it is my purpose to provide automatic train stopping apparatus which will be found especially useful on single track railways and at grade crossings and which will be so constructed that a train on one section of the track may set the apparatus in a remote section ahead so as to stop a an approaching train, thereby preventing a head-on collision, and whereby a train approaching a grade crossing upon one track may, when within a given distance of the point of intersection of the tracks, set the apparatus upon the intersecting track to automatically stop a train approachinglthe crossing upon such intersectingtrack, t ereby preventing a collision at the crossing. I

It is also my purpose to provide automatic train stopping apparatus of the class described which may be installed and maintained at small cost and which will operate etliciently and effectively under all conditionsr 1 With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts here: inafter set forth in and falling within the scope of the claims.

In the accompanying drawings;

Figure 1 is a diagrammatic plan view of a. trackway showing the circuit connections upon a single trackrailway.

.Fig. 2 is a cross sectional view through the trackway showing the track obstaclesl Fig. 3 is a horizontalsectional view through one ofthe track obstacles, parts be ing howninplan. i t

- Fig. 4 is a diagrammatic view showing the circuit connections at a grade crossing. Fig. 5 is a cross sectional view through the trackway showing one'ofthe track obstacles in elevation. l I I Fig. 6 is a similar view through the releasing device at the grade crossing.

Fig. 7 is an end view of a car showing the 1 2 and mounted uponeach standard 2 adjacent to the upper end thereof is a normally open electric switch 3 and disposed below the switch 3 is an arm 4: capable of swinging movement from a position parallel with the trackway to a position at right angles to the trackway and normally arranged parallel with the traokway. The arm 4 is under the control of an electro-magnet 5 or other elec tro-responsive device that is disposed with relation to the arm in such manner that the arm may be swung from inactive position to active position when the magnet is energized. Arranged at the end of the path of movement of the arm 4 to inactive position is a stop 6 secured to the standard 2 and designed to prevent further movement of the arm in one direction. Adjacent magnet 5 are stops 6 adapted to retain arm 4 in active position until actuated by the resetting means provided. Extending longitudinally of the trackway upon each side thereof are side of the electro-responsive device 5 of a 1 remote block and from the other side of such el.ectro-responsive device leads a wire 9 terminally connected to the other feed wire 7. As an illustration of the manner of connecting the switches and electro-responsive devices, it will be seen that the switch at one end of the block a controls the electro-responsive device at the corresponding end of the block 0, while the switch at one end of the block 5 controls the electro-responsive device at the corresponding end of the block 03. Thus, when the switch at the end of block a is actuated to close the circuit, the electro-responsive device at the corresponding-end of block 0 isenergized and the arm 4 swung to active position. Mounted upon one side of each motor car opn-xrating over the trackway are outwardly projecting arms 11 and 12 alining with the switches 3 and arms atrespectively on one side of the trackway, while projecting outwardly from the other side of the motor car is a normally open electric switch 13 alining with the arms 4 on the other side of the traclnvay. The switch 13 controls suitable 'electro-responsive mechanism whereby the propelling power of the motor car may be cut oif-and the brakes applied, but as this mechanism forms no part of the present invention, it is not thought necessary to illustrate the same.

In practice, when a motor car enters block a, for instance, the arm 11 actuates the switch 3 momentarily to closed position, thereby swinging the arm 4 at the corresponding end of block 0 to active position. Should a train be approaching the train in block a head-on, the switch 13 will be en gaged by the arm at when the anotor car attempts to pass fromblock c to block 6, thereby bringing such train to a standstill automatically. Should block 0 be occupied, and the train be passing into block b, the arm 11 will actuate the switch 3 to close the circuit to the electro-responsive device of the arm 4 at thecorresponding end of block a, thereby preventing a train from entering block a head-on. On the other hand, should the track ahead be clear, and the train that passed through blocks a and Z) enter block 0, the arm 12 will strike the arm 1 at the end of block 0 and restore such arm to normal'position, the arm 11 actuating the switch 3 at block 0 to set the arm 4 of the remote block ahead to active position so that the train in block a will be protected.

In Fig. 4 of the drawings, A and B indicate two lines of intersecting trackways and arranged upon opposite sides of each trackway 011 both sides of the crossing and spaced apart from the point of intersection of the rails suitable distances are vertical standards 14: having the upper ends interconnected by means of a cross bar 15 forming,

with the standards 14, an inverted U-shaped frame. This frame is of greater width and height than the corresponding dimensions of the cars of the train so that the train may readily pass through the frame. Suitably mounted in'each frame adjacent to the upper end thereof is a switch 16 and arranged at one side of the switch 16 is a solenoid 17 or other electro re sponsive device controlling a plunger 18. Each switch 16 controls two circuits 19,19 that include a-source of energy and the electro-responsive devices 17 of the intersecting trackways, as clearly illustrated in Fig. 4 of the drawings. It will be seen that upon closure of a switch 16, current will flow from the positive pole of battery 26, through conductor 28, said switch 16, conductor 19, conductor 17, electro-responsive devices 17, conductor 27, and to the negative pole of battery Arranged at the point of intersection of the trackways is an inverted U-shaped frame 20 that straddles the intersecting rails and mounted in the upper end of this frame is a switch 21 that controls circuits 22 including a source of energy and the electroresponsive devices 31. a y

Circuits 22 are arranged in parallel, each comprising battery 26, conductor 28, electro-responsive device 31, conductor 22 ing, the arm 21 on the last ear actuates the switch 21 to close the circuits 22, thereby energizing the electro-responsive devices 31 to restore the plungers 18 to normal posi, tion. These circuits 19 and 22 are closed momentarily only and the plungers 'are held in active or inactive position by any suitable means. Each motor car is equipped with a switch25 that is adapted to be actuated by an active plunger 18 and this switch 25 controls an electric circuit that includes mechanism whereby the propelling power of the motor ear may be cut offand the brakes-applied. 1 I r While I have herein shown and described certain preferred forms of my invention by way of illustration, I wish itto be understood that I do not limit or confine myself to the precisede'tails of constru'ctionher'ein described and delineated, as modification and variation may be made within the scope of the claims and without departing from the spirit of the invention.

1. In automatic trainstopping apparatus, the combination with intersecting lines of tracks, of a pair of solenoids spaced apart along each trackwa'y, the solenoids 'of each the combination with intersecting lines of a the control of said point of intersection of the tracks, cirtracks, of a pair of solenoids spaced apart along each trackway, the solenoids of each pair being located on opposite sides of the point of intersection of the tracks, plungers for said solenoids, said plungers adapted for movement from an inoperative to an operative position, means for retaining said plungers in the operative position, and electro-magnetic releasing devices for said retaining means, a pair of switches spaced apart along each trackway and disposed on opposite sides of the point of intersection of the tracks, circuit connections between each switch and the solenoids of the intersecting lines of tracks, car-carried mechanism under plungers, a switch at the cuit connections between the last-mentioned switch and said releasing device, car-carried means for actuating the first-mentioned switches, and car-carried means for actuating the last-mentioned switch.

3. In automatic train stopping apparatus, the combination with intersecting lines of tracks, of electro-responsive devices arranged above each trackway at both sides of the point of intersection of the rails, a switch adjacent to each electro responsive device, circuit connections between each switch and the electro-responsive devices of plea of this patent may be obtained for five cents each, by addressing the Washington, I). 0.

the intersecting line of rails whereby upon the operation of the switch, said devices may be rendered active, plungers under the control of said electro-responsive devices respectively, and car carried mechanism under the control of said plungers.

4c. In automatic train stopping apparatus, the combination with intersecting lines of tracks, of electro-responsive devices arranged above each trackway at both sides of the point of intersection of the rails, a switch adjacent to each electro-responsive device, circuit connections between each switch and the electro-responsive devices of the intersecting line of rails whereby upon the operation of the switch, said devices may be rendered active, plungers under the control of said electro-responsive devices respectively, electro-reponsive means adapted to restore said plunger to normal position, car carried mechanism under the control of said plungers, a switch at the point of intersection of the trackways, circuit connections between said switch and said electroresponsive means, and car carried mechanism for operating the said switch to energize said electro-responsive means to restore said plungers to normal position.

In testimony whereof I aflix my signature.

HAGOP H. KHOUBESSERIAN.

Gommissioner of Patents, 

